Camshaft driving arrangement for double overhead camshaft engine

Details Camshaft driving arrangement for double overhead camshaft engine Camshaft driving arrangement for double overhead camshaft engine

1989-12-14

1991-04-30

Wolfe, Willis R.

Internal-combustion engines

Poppet valve operating mechanism

Camshaft drive means

123195C, 123198E, F01L 102, F02F 700

Patent

active

050108557

ABSTRACT:
In a DOHC engine, a sprocket chamber is formed at the cylinder head at one end thereof, and formed with a lateral opening. A timing chain drivingly interconnects a crankshaft and an idler gear, whereas a camshaft driving chain drivingly interconnects the idler gear and a pair of cam sprockets. A first tensioner is mounted to a cylinder block for adjusting the tension of the timing chain, whereas a second tensioner is mounted to the sprocket chamber for adjusting the tension of the camshaft driving chain. There are provided means for defining an access to the first tensioner.

REFERENCES:
patent: 4553473 (1985-11-01), Ichida et al.
patent: 4729348 (1988-03-01), Okada et al.
patent: 4750455 (1988-06-01), Ebesu
patent: 4867335 (1989-09-01), Segal
patent: 4883031 (1989-11-01), Ampferer et al.

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